We're Heidelberg's Primary Geothermal Contractor! Heidelberg, Mississippi, homeowners have all sorts of reasons for wanting a geothermal heating and cooling system: remarkable year-round comfort – no matter how crazy the seasonal variations stable operating efficiency energy performance (They’d be hard-pressed to find a more "green," more natural way to heat and cool their homes!) significant – sometimes outstanding – savings on their energy bills premium installation and maintenance from American Air Specialists, Heidelberg's geothermal professionals. Learn more about what a geothermal heating and cooling system can do to improve your family's comfort. Look at our Geothermal Savings Calculator. Then contact American Air Specialists. We sell, install, and maintain WaterFurnace geothermal systems, the very best on the market today.